Using the java tutorials and im stuck!

Question

Hey, soz to be a pain and post something probably rediculously easy! im trying to learn java going through the online tutorials, im at the end of the object orinetated programming chapter and am doing the followning task;
Exercises
Create new classes for each real-world object that you observed at the beginning of this trail. Refer to the Bicycle class if you forget the required syntax.
For each new class that you've created above, create an interface that defines its behavior, then require your class to implement it. Omit one or two methods and try compiling. What does the error look like?
here is the code i have done for task one so far, but it wont compile, please dont tell me the answers, can you tell me where i am going wrong and suggest ideas for improvments and then ill post my reply here and tell me if i am right? thank you
class Television
int poweron = 1;
int poweroff = 0;
int channel = 1;
void change poweron (int increment)
          poweron = poweron + increment;
void change poweroff (int increment)
          poweroff = poweroff + increment;
void change channel (int newValue)
          channel = newValue;
}

Answer 1

i have the two codes,
this one
class Television
int poweron = 1;
int poweroff = 0;
int channel = 1;
void changepoweron (int increment)
          poweron += increment;
void changepoweroff (int increment)
          poweroff += increment;
void changechannel (int newValue)
          channel = newValue;
void printStates()
        System.out.println("poweron"+poweron+" poweroff:"+poweroff+" channel:"+channel);
}and this one
class TelevisionChange
     public static void main (String[] args)
          Television newTV = new Television ();
          newTV.changepoweron(0);
          newTV.changepoweroff(1);
          newTV.changechannel(6);
          newTV.printStates();
}both are stored in the same folder on my computer, c:\user\documents\textpad stuff
when i compile them there is no eror in textoad but then when i goto run java application using the television class i get the following error;
exception in thread main java.lang.nosuchmethoderror: main press any key to continue, when i compiile and run the other code i get a massive error saying
Exception in thread "main" java.lang.NoClassDefFoundError: televisionchange (wro
ng name: TelevisionChange)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
4)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
Press any key to continue . . .